harmonicpair

noun
UK /hɑːˈmɒnɪk peə/
US /hɑːrˈmɑːnɪk per/

Two things that go together and sound or look nice as a team.

The two bells made a harmonic pair that rang sweetly together.


OTHER MEANINGS

2. Two musical notes that sound pleasant when played at the same time.

The guitarist played a harmonic pair to end the song.

3. Two people who work together very smoothly.

The coaches were a harmonic pair, always agreeing on the plan.

4. Two colors or shapes that look balanced together.

Blue and green make a harmonic pair in this painting.